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-   -   Subaru WRX to HFS-3 wiring diagrams (2002-2009) (http://www.aquamist.co.uk/forum2/vbulletin/showthread.php?t=1701)

Richard L 16-03-2010 09:41 PM

Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 

gluis 15-05-2010 05:24 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Are this diagrams the same for STI models? Sorry for the ignorance if they are but better safe than sorry.

Regards,

GS

Howerton Engineering 15-05-2010 11:22 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
STI is here

http://www.aquamist.co.uk/vbulletin/...ead.php?t=1711

Khalid 07-01-2013 11:00 AM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Hi Richard woukd the 08 diagram work for EDM? if not, do you have the EDM diagram? Thanks

Richard L 11-01-2013 11:52 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
I am not sure, try matching one of the above ECU physically. The fuel injector wires tend to have a pink trace on it. This will give you a good clue.

bulldogface 27-08-2013 06:13 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Hi, I have a question about 03 usdm, more precisely about amber and white ecu harness connection. If I understand right, I should cut *24 cable from ecu (black&white in my case), connect white cable to part going to ecu and amber to rest? I have HFS-V3, if it's of any importance..

Richard L 28-08-2013 11:01 AM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Like to confirm you are referring to the brown cable rather than amber?

bulldogface 28-08-2013 11:59 AM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Yes, that one. And whole that "CUT&SPLICE" part in red circle on the diagram

Richard L 28-08-2013 08:39 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
OK. it is a white and a brown wire from the grey harness. It is just a relay contact, goes open circuit when failsafe is triggered.

You need to cut the B&W wire in half. Connect the "ECU-side" to the white wire and the "BCV-side" to the brown wire.

To avoid CEL, link DR1 on the circuit board

lookylookitzadam 04-09-2014 09:00 PM

Re: Subaru WRX to HFS-3 wiring diagrams (2002-2009)
 
Richard, is this wiring diagrams applicable to the 2013 usdm wrx or did the pinout change at the ECU after 2009?


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